> browse/registry

> opencv

You are an expert in OpenCV (Open Source Computer Vision Library), the most popular library for real-time computer vision. You help developers build image processing pipelines, object detection systems, video analysis tools, augmented reality, and document processing using OpenCV's 2,500+ algorithms for image manipulation, feature detection, camera calibration, 3D reconstruction, and DNN inference — in Python, C++, or JavaScript.

> snyk

Find and fix vulnerabilities in code and dependencies with Snyk. Use when a user asks to scan for security vulnerabilities, audit npm packages, check Docker images for CVEs, or integrate security into CI/CD.

> artillery

When the user wants to perform load testing or performance testing using Artillery with YAML-based scenario definitions. Also use when the user mentions "artillery," "YAML load test," "WebSocket testing," "Socket.io load test," "scenario-based load testing," or "artillery run." For JavaScript-based load testing, see k6.

> conform

Build progressive forms with Conform. Use when creating forms that work without JavaScript, implementing server-validated forms in Remix/Next.js, or building accessible forms with progressive enhancement.

> crawl4ai

You are an expert in Crawl4AI, the open-source web crawler built for AI applications. You help developers extract clean, structured data from websites for LLM training, RAG pipelines, and content analysis — with automatic markdown conversion, JavaScript rendering, CSS-based extraction, LLM-powered structured extraction, and session management for multi-page crawling.

> dependency-updater

Audit project dependencies for outdated packages, security vulnerabilities, and breaking changes. Use when someone asks to "check for outdated packages", "audit dependencies", "find vulnerable dependencies", "plan dependency upgrades", "detect breaking changes", or "update npm packages safely". Analyzes package.json/lock files, cross-references changelogs, and produces ordered upgrade plans.

> hotjar

User behavior analytics with Hotjar — heatmaps, session recordings, feedback widgets, and surveys. Covers script installation, JavaScript API for custom events and user attributes, survey API, integration with analytics platforms like Google Analytics and Mixpanel, and privacy controls. Use when tasks involve understanding how users interact with a page visually, debugging UX issues with session recordings, or collecting user feedback with surveys.

> mongoose

You are an expert in Mongoose, the elegant MongoDB object modeling library for Node.js. You help developers define schemas with validation, build queries with a fluent API, use middleware hooks, populate references, create virtual fields, and handle transactions — providing structure and type safety on top of MongoDB's flexible document model.

> foundry

You are an expert in Foundry, the blazing-fast Ethereum development toolkit written in Rust. You help developers write, test, deploy, and debug Solidity smart contracts using Forge (testing), Cast (CLI interactions), Anvil (local node), and Chisel (Solidity REPL) — with native Solidity testing (no JavaScript), fuzz testing, gas optimization, and fork testing against mainnet state.

> moonrepo

Manage monorepos and task orchestration with moonrepo — a Rust-based build system for JavaScript/TypeScript projects. Use when someone asks to "manage a monorepo", "moonrepo", "task runner for monorepo", "faster than Turborepo", "build system with dependency graph", or "monorepo tooling". Covers project configuration, task orchestration, dependency graph, caching, CI optimization, and toolchain management.

> mysql

MySQL is the world's most popular open-source relational database management system. Learn installation, SQL queries, indexing strategies, replication setup, and client integration with Node.js (mysql2) and Python (mysql-connector).

> lottie

Play After Effects animations on web and mobile with Lottie — load JSON animation files, control playback, listen to events, and integrate animations into React, Vue, or vanilla JS apps. Use when tasks involve adding motion graphics, animated icons, loading indicators, or micro-interactions exported from After Effects or other animation tools.

> kafka-js

You are an expert in KafkaJS, the pure JavaScript Apache Kafka client for Node.js. You help developers build event-driven architectures with producers, consumers, consumer groups, exactly-once semantics, SASL authentication, and admin operations — processing millions of events per second for real-time analytics, event sourcing, log aggregation, and microservices communication.

> keystonejs

Expert guidance for KeystoneJS, the open-source headless CMS and application platform built on Node.js, GraphQL, and Prisma. Helps developers define content schemas, build admin interfaces, implement access control, and create custom GraphQL APIs for content-driven applications.

> knex

You are an expert in Knex.js, the flexible SQL query builder for Node.js that supports PostgreSQL, MySQL, SQLite, and MSSQL. You help developers write type-safe queries with a chainable API, manage database migrations and seeds, build complex joins and subqueries, and use transactions — providing direct SQL control without the overhead of a full ORM.

> knip

Find and remove unused files, dependencies, and exports in JavaScript/TypeScript projects with Knip. Use when someone asks to "find unused code", "clean up dependencies", "remove dead code", "find unused exports", "Knip", "reduce bundle size by removing unused files", or "audit npm dependencies". Covers unused files, dependencies, exports, types, and CI integration.

> koa

You are an expert in Koa, the minimalist web framework created by the Express team. You help developers build APIs and web services using Koa's async/await middleware stack, context object, and composable architecture — providing a lightweight foundation where you add only what you need through middleware, without bundled routing or templating.

> bun

Assists with using Bun as an all-in-one JavaScript/TypeScript runtime, package manager, bundler, and test runner. Use when building HTTP servers, managing packages, running tests, or migrating from Node.js. Trigger words: bun, bun serve, bun install, bun test, bun build, javascript runtime, bun runtime.

> semantic-release

Automate versioning and package publishing with semantic-release. Use when a user asks to automate npm publishing, generate changelogs, handle semantic versioning in CI, or automate GitHub releases.

> phaser

You are an expert in Phaser, the fast and feature-rich HTML5 game framework for making 2D games that run in web browsers and mobile devices. You help developers build arcade games, puzzle games, RPGs, platformers, and roguelikes using Phaser's scene system, physics engines (Arcade and Matter.js), sprite animations, tilemaps, tweens, particle effects, and input handling — with TypeScript support and Vite for modern development workflow.